Half to theodoee f



(Model.)

F. A. HOLLENBECK.

MORTISE LOCK. I No. 317,941. Patented May l2, 1885.

'j Miren STATES ill Fnfliewr irren.

FRANK A. HOLLENBEOK, OF SYRACUSE, NEW YORK, ASSIGNOR OF ONE- HALF TOTHEODORE E OLARK, OF SAME PLACE.

MORTISYE-LOCK.

SPECIFICATION forming part of Letters Patent No.\317,941, dated May 12,1885.

' Applica-non nieu February 2, rees. (Model.)

To a/ZZ whom, t may concern,.-

Be it known that I, FRANK A. HOLLEN- BECK, of Syracuse, in the county ofOnondaga, in the State of New York, have invented new and usefulImprovements in Mortise-Locks, of which the following, taken inconnection with the accompanying drawings, is a full, clear, and exactdescription.

This invention consists in a novel construction of a Inortise-lock whichcan be cheaply manufactured and easily applied to a door, and is durableand efficient in its operation.

rIhe invention is fully illustrated in the annexed drawings, whereinFigure I is an edge view of a section of the door, provided with myimproved lock. Fig. Il is a vertical transverse section of the saine.Fig. III is a longitudinal section taken on line m zr, Fig. Il. Fig. IVis a section taken on line yy, Fig. II. Figs. V, VI, and VII aredetached views of -the lock, as seen from different sides, and Fig.

VIII illustrates modifications of the device operating and locking thebolt.

Similar letters of reference indicate corresponding parts.

A represents a cylindrical metal case, in which slides the cylindricalbolt B. Said case is provided externally with screw-threads s s, and issecured in a cylindrical mortise bored in the edge of the door byinserting the case endwise into the said mortise, and turning the caseso as' to cause it to be drawn in by the engagement of its screw-threadswith the interior of the mortise. The outer end portion of the ease isformed with acylindrical neck, n, and with a collar, c, back of saidneck. Another collar, c', secured to the extremity of the case,constitutes the scutcheon which is to be flush with the edge of thedoor. The neck n is provided with a longitudinal slot, r, and alocking-ring, g, fitted loosely on the neck a, is also provided with aslot, o, which latter may be either parallel with the case, as shown inFig. V of the drawings, or run obliquely part way around thelocking-ring, as shown in Fig. VIII of the drawings. From the bolt Bprojects a studpin, h, which protrudes through the slots r and o. Byextending the said slots into the outer collar, o', as shown in Fig. Voi' the drawings, thestud-pin his held ont of engagement with the slot oof the lock- I ing-ring g, when the bolt projects from the case and isin its locked position. By turning the locking-ring g to prevent thestud-pin from entering theslot-o thereof, the bolt B is prevented frombeing retracted, thusobtaining a simple and effective lockingdevice.

rIhe rear end of thelocking-ringis provided with an extension, m, whichprojects into a notch, o, in the collar c, which notchis of the properlength to limit the rotation of the locking-ring. In another notch, o',in the collar c is a keyseatfw, and the adjacent edge ofthe locking-ringg is provided with a notch, w, for the engagement of the key by which toturn the ring g.

In order to compensate for wear of the ring g and maintain the same inproper bearings between the two collars c and c', I interpose the ring ga spring, t', as shown in Figs. VI, VII, and VIII of the drawings.

By making the slot o obliquely, as shown in Fig. VIII of the drawings,and with a short transverse portion at the outer end of thelocking-ring, and arranging the stud-pin hon the bolt B so as to comeinto said transverse portion of the slot o, the described slot can bemade to retract the bolt loy turning thelocking-ring g, the transverseend portion of the slot Serving to lock the bolt. The inner end of thebolt B is provided with ascrew-threaded socket, d, and to the saidsocket is secured a shank, B', which has a screw-threaded stud,e,entering the aforesaid socket.

The shank B', which is of rectangular form in crosssection,projectsthrough a corresponding opening in the rear end of the case A.

A spiral spring, p, surrounding the shank B', and pressing'against therear end of the bolt B, forces said bolt outward intoitslocked position.

Under the rear end of the case A an annular mortise is formed in theside of the door, and in said mortise is iirnily secured an annularplate, f. On this plate is pivoted alever, a, the feed end of whichinterlocks with the protruding end of the bolt-shank B', as shown inFig. III of the drawings.

Through the plate f, in front of the lever a, projects the spindle S, towhich is secured a cam, b, which cam swings the lever c rearL betweenthe collars c and the adjacent end of 7o IOO - einen ward When turningthe spindle S,and said action of the lever retracts the bolt B.

A stud-pin, k, secured to the interior of the case A, and projectingthrough the slot t in the bolt-shank B, serves to limit the movement ofthe bolt. j

Having described my invention, what I claim 1s 1. The combination,withthe case A,formed with the cylindrical neck n, slot r, and collars c cat the ends thereof, of the locking-ring g on said neck, and providedwith the slot o, the bolthaving stud-pin h projecting therefrom andthrough the slots r o, and a key for turning the ring g, substantiallyas set forth.

2. g The combinatiomwith the case A, formed 'with the cylindrical neckn, slot 1^, and collar c, having notches fu o', and the key-seat u inone of said notches, and llhe collar con the outer end of said neck n,of the locking-ringy provided with the extension m, notch w, and

slot vo, the spring z', interposed between the ring and collar c, thebolt having stud-pin h projecting therefrom and through the slots r o,and a key for turning the ring g, substan- 25 tially as speciiied.

3. In combination with the case A, inserted in a rnortise in the edge ofthe door, and the spring-bolt B B in said case, the annular plate f,secured in a mortise in the side of the door, 3o the spindle S,extending through said plate, the lever a, pivoted on the plate f andinterlocked with the bolt-shank B', and the cam b on 'the spindle foroperating the lever, all combined substantially. in the manner speciiied3 5 and shown.

In testimonywhereof I have hereunto signed my name and affixed my seal,in the presence of two attesting Witnesses, at Syracuse, in the countyof Onondaga, in the State of New York, 4o this 30th day of January,1885.

FRANK A. HOLLENBECK. [L s] Witnesses:

O. H. DUELL,

F. H. GIBBs.

